**People tend towards the flesh, in what you would like, what they want or desire to have , do, places to go, or to watch, or read. **
"Fasting is placing yourself in a position where you realize to an extent, your fleshly desires as mentioned above. Hence, to gain some form of “control” over the flesh you fast against that which is “hindering” you (holding you back from Loving God).
Fasting also tends you much more towards the spirit of God hence allowing God a greater ability to enter you and for you to “hear Him” “follow His words” follow His wishes of you". Also to see others needs, and to draw nearer to “loving God in the way He wishes”. NOT by a very humanistic approach.